Answer:
[tex]y=-3[/tex]
Step-by-step explanation:
Given Equation:
[tex]9x +7y=-12\\[/tex] y=? at x= 1
Putting the given value of 'x' in the equation:
[tex]9(1) +7y=-12\\\\9+7y=-12\\\\7y=-12-9\\\\7y=-21\\\\y=-\frac{21}{7} \\y=-3[/tex]
At [tex]x=1[/tex], the value of y is [tex]y=-3[/tex]